When Chrysalis invaded Equestria the first, with an army of Changelings by her side and a desire to subjugate each and every last Equestrian, she was considered one of the greatest threats Equestria had ever known.

When she tried again, by herself and with no discernible plan whatsoever, she became a laughingstock. Threat or laughingstock, either way, Celestia is tired of her shenanigans, and as such, has sentenced her to rehabilitation by way of friendship.

Chrysalis would have preferred death.